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Comparing IO-AIO/Changes (file contents):
Revision 1.134 by root, Sun Dec 2 20:54:33 2007 UTC vs.
Revision 1.342 by root, Fri Jun 23 22:46:46 2017 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: scandir - some dirs mostly contain subdirs - invert logic?
4TODO: aio_cptree/mvtree 4TODO: aio_cptree/mvtree
5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: fix setsig
7TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) 5TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
6TODO: getxattr, setxattr, listxattr, removexattr etc.?
7TODO: emulation for splice?
8TODO: syncfs/sync windows:
9TODO: posix_fallocate when flags=0
10http://stackoverflow.com/questions/65170/how-to-get-name-associated-with-open-handle/5286888#5286888
11http://blogs.msdn.com/b/adioltean/archive/2005/04/16/408947.aspx
12http://msdn.microsoft.com/en-us/library/aa366789%28v=vs.85%29.aspx
13http://msdn.microsoft.com/en-us/library/windows/desktop/aa366789%28v=vs.85%29.aspx
14http://msdn.microsoft.com/en-us/library/windows/desktop/aa364425%28v=vs.85%29.aspx
15http://msdn.microsoft.com/en-us/library/windows/desktop/aa364963%28v=vs.85%29.aspx
16http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx
17http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx
18TODO: extra socket/tcp constants &c?
19TODO: http://lwn.net/Articles/593918/ SHMEM_SET_SEALS, SHMEM_GET_SEALS, SEAL_SHRINK, SEAL_GROW, SEAL_WRITE, int memfd_create(const char *name, u64 size, u64 flags);, MFD_CLOEXEC, int fd = open("/tmp", O_RDWR | O_TMPFILE | O_EXCL, S_IRWXU);
20TODO: name_to_handle_At + open_by_handle_at = clone fds
21TODO: lchown
22TODO: mount/umount2/MS_* flags
8 23
92.6 24TODO: rewrite rmtree et al. to support working directories (also speed them up)
25TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1?
26TODO: aio_wd should use O_PATH on linux, due to lacking O_SEARCH (http://comments.gmane.org/gmane.linux.file-systems/33611)
27 http://www.openwall.com/lists/musl/2013/02/23/4
28TODO: copy_file_range, copy_file_range
29TODO: FIDEDUPERANGE, file_ioctl.c
30TODO: mincore
31TODO: SOCK_CLOEXEc etc.
32TODO: unlinkat flags, linkat flags
33TODO: https://kernelnewbies.org/Linux_4.11
34
35 - add a bunch of (mostly linux-specific) constants for use in ioctls
36 (see aio_ioctl docs).
37 - treescan now has a proper manpage and useful --help output.
38 - new option --sync in treescan, to sync everything in a subtree.
39 - changed default for aio_msync flags to MSYNC_SYNC.
40 - document offset/length behaviour of mprotect/madvise.
41 - support linux's renameat2 (via aio_rename2).
42 - add aio_rename2, an aio_rename with flags.
43 - add F_DUPPFD_CLOEXEC, F_OFD_[SG]ETLKW? constants.
44 - add FALLOC_FL_INSERT_RANGE, FALLOC_FL_UNSHARE_RANGE.
45
464.34 Sun May 1 19:18:24 CEST 2016
47 - def0.h was not properly generated during previous release, causing
48 compile errors on various platforms.
49 - major/minor were accidentally switched (reported by Alexander Lishenyuk).
50 - removed duplicate definition of MAP_HUGETLB, that was found due to
51 a bug in Perl::Tidy (testcase by alaska332@gmail.com).
52 - added (untested!) aio_fcntl, aio_ioctl requests.
53 - (libeio) names set via prctl are truncated to 15 chars + nul, not 16,
54 as manpages-dev originally claimed.
55
564.33 Mon Jan 18 12:50:10 CET 2016
57 - add IO::AIO::pipe2 function.
58 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
59 constants.
60 - added support for O_TMPFILE and O_PATH constants.
61 - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK
62 consdtants, whether they can be sensibly used or not.
63 - use NO_INIT where applicable.
64 - update libecb.
65 - added stability canary support.
66 - updated linux super magic table to 4.3.3.
67
684.32 Wed Feb 11 20:32:11 CET 2015
69 - replace off_t by STRLEN where appropriate, should not result in
70 user-visible changes.
71 - update ecb.h for C11 compatibility.
72
734.31 Tue Jun 3 03:29:27 CEST 2014
74 - work around more 5.20 bugs. backwards compatibility my ass.
75
764.3 Fri Apr 11 06:22:38 CEST 2014
77 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
78 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
79 in 5.18. What's so attractive about giving a shit about backwards
80 compatibility - I will never understand.
81
824.2 Sat Jan 25 01:13:14 CET 2014
83 - aio_group could corrupt memory because it didn't restore
84 the stack after req_submit.
85 - be more careful on (e.g. permission) errors in bin/treescan.
86 - work around changes in ExtUtils::MakeMaker.
87 - (libeio) implement aio_realpath for win32.
88 - (xthread) work around compile time bugs in ptw32.
89 - added IO::AIO::pipesize.
90 - (libecb) insignificant update.
91
924.19 Sun Jan 6 12:47:26 CET 2013
93 - avoid endless loop in fiemap with some XFS files.
94 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
95 and call rename/rmdir instead of renameat/unlinkat.
96
974.18 Thu Oct 11 07:01:26 CEST 2012
98 - fix unintended xthread_create by intentionalising it :)
99
1004.17 Thu Oct 11 05:19:47 CEST 2012
101 - rename aio_fallocate to aio_allocate, to match documentation.
102 - add list of linux fsid values to aio_statvfs docs.
103 - work around a bug in btrfs' FIEMAP ioctl implementation.
104 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
105 as per unix spec.
106
1074.16 Tue Aug 14 05:39:03 CEST 2012
108 - aio_statvfs was wromgly marked for wd emulation, causing
109 it to malfunction for paths.
110 - fix a crash in aio_fiemap, when used on ranges without any
111 extents.
112 - work around linux kernel bug (at least in 3.2): kernel might
113 trash fiemap input arguments.
114 - work around linux kernel bug (at least in 3.2): kernel does not
115 set FIEMAP_EXTENT_LAST on last segment.
116 - work around linux kernel bug (at least in 3.2): kernel silently
117 truncates segment count if a file.
118 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
119 to quick overview.
120 - splice can corrupt data.
121 - (libeio) remove pread/pwrite emulation.
122 - do not grow mmaped scalars in aio_read.
123 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
124 - provide pread/pwrite for win32, making it link again on native win32.
125
1264.15 Tue Apr 10 06:59:00 CEST 2012
127 - always include linux/types.h for fiemap, for compatibility to
128 ancient systems (Paul Howarth).
129 - experimental support for IO::AIO::splice and ::tee (no aio_...).
130 - provide SEEK_HOLE and SEEK_DATA, if available.
131 - work around (again!) an immensely stupid bug in RHEL, defining
132 autoconf macros in linux system headers (analysed by Paul Howarth).
133
1344.14 Sat Apr 7 02:45:18 CEST 2012
135 - fix stat structure usage on windows, which caused bogus stat results.
136 - (libeio) make readahead emulation behave more like actual readahead by never failing.
137 - new request aio_seek.
138 - new request aio_fiemap.
139 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
140
1414.12 Fri Dec 30 08:51:25 CET 2011
142 - realpath would return a random value if the name was too long,
143 instead of -1.
144 - port to c89.
145
1464.11 Mon Oct 10 00:24:11 CEST 2011
147 - libeio didn't compile on !linux (Paul Howarth).
148
1494.1 Sun Oct 9 10:24:11 CEST 2011
150 - IO::AIO did access uninitialised memory on unsuccessful stats.
151 - (libeio) added syncfs syscall wrapper.
152 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
153 - (libeio) support multiple indepenent working directories.
154 - applied speling corrections by Nicholas Bamber.
155 - tune treescan #threads and #outstanding requests a bit.
156 - reduce the number of file descriptors in use at any one time
157 in treescan, to avoid running out of them (and using too much ram).
158 - take advantage of working directoriy abstractions
159 in aio_scandir and treescan.
160 - reduce compiled size by ~10% by not inlining some key functionality.
161 - added --progress switch to treescan.
162
1634.0 Mon Jul 18 05:01:10 CEST 2011
164 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
165 see FORK BEHAVIOUR in manpage for details.
166 - passes testsuite on win32 now and may actually work
167 (activestate 5.10.1 / MSVC6, YMMV).
168 - (libeio) fix a deadlock where a wakeup signal could be missed when
169 a timeout occured at the same time.
170 - (libeio) added realpath.
171 - (libeio) added fallocate.
172 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
173 - (libeio) do not acquire any locks when forking.
174 - (libeio) use fewer time() syscalls when waiting for new requests.
175
1763.93 Wed Jun 29 23:44:18 CEST 2011
177 - ECB.H WAS MISSING.
178
1793.92 Wed Jun 29 14:45:41 CEST 2011
180 - ecb.h was missing.
181
1823.91 Wed Jun 29 13:24:42 CEST 2011
183 - (libeio) work around a Linux (and likely FreeBSD and other
184 kernels) bug where sendfile would not transfer all the requested
185 bytes on large transfers, using a heuristic.
186 - buggy sendfile caused aio_move/copy to sometimes fail for big
187 files (fortunately it checks that the whole file has been
188 transferred...)
189 - use libecb for higher performance and higher portability.
190 - (libeio) disable sendfile on darwin, it's too broken.
191 - disable fork tests on !linux, as only linux supports mixing
192 pthread and fork in perl.
193 - document the fact that fork doesn't work anymore when using
194 this module, on anything !GNU/Linux.
195 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
196 run on a 0.1MHz cpu. Or so.
197
1983.9 Fri May 27 02:43:47 CEST 2011
199 - (libeio) fix memory corruption in aio_readdirx for the flags
200 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
201 - add lots of newer POSIX and GNU/Linux-specific open
202 flags.
203
2043.8 Sun Mar 27 12:25:33 CEST 2011
205 - use nonstandard but maybe-working-on-bsd fork technique.
206 - support a max_idle value of 0.
207 - support setting of idle timeout value (IO::AIO::idle_timeout).
208
2093.72 Fri Feb 11 04:25:38 CET 2011
210 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
211 - aio_mknod always used a dev_t value of 0.
212 - new treescan option: --grep.
213 - add more S_IF macros, and major/minor/makedev "macros".
214
2153.71 Thu Dec 30 08:18:46 CET 2010
216 - the numerical result value passed to callbacks did not stringify
217 correctly, due to internal reuse and failure to reset the sv flags.
218 - actually test for posix_[mf]advise, as at least uClibc defines
219 _POSIX_ADVISORY_INFO without actually having any of the required
220 funcitonality. ugh.
221
2223.7 Mon Nov 1 23:00:34 CET 2010
223 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
224 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
225 - document the sad state of affairs w.r.t. pthread on many bsds.
226 - do not enable mmap on systems without _POSIX_MAPPED_FILES
227 (openbsd 4.8).
228 - do not leak memory in IO::AIO::mmap when the scalar already
229 had string-data.
230 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
231 them.
232 - cache the result IV, for a minor speedup in the common case.
233 - croak when an mmapped-scalar changes location, to detect
234 user-errors better.
235 - fix aio_readlink prototype.
236
2373.65 Wed Mar 31 02:45:05 CEST 2010
238 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
239 cut off long pathnames in aio_readlink (based on patch by
240 Rasmus Andersson).
241 - a double fork partially killed the event pipe (great testcase
242 by dormando). affects IO::AIO, BDB and Async::Interrupt.
243 - suck steve's dick and rename our symbols to avoid colliding
244 with nonstandard identifier spam on the broken os x pseudo-os.
245 affects IO::AIO and BDB.
246
2473.6 Mon Jan 11 00:43:39 CET 2010
248 - (libeio) more fixes for the freebsd/apple sendfile - broken by
249 manpage standards, but apparently correct accoridng to actual
250 kernel sources.
251 - add IO::AIO::mmap/munmap support.
252 - add IO::AIO::m(un)lockall support.
253 - clean up manpage.
254
2553.5 Thu Jan 7 21:25:04 CET 2010
256 - (liebio) fix freebsd sendfile (Vanilla Hsu).
257 - (libeio) also fix darwin sendfile that suffered from a similar bug.
258 - add aio_statvfs as interface to statvfs/fstatvfs.
259 - work around buggy symlink() on cygwin in the testsuite.
260 - wtf. freebsd-8.0 actually passes the testsuite! I knew
261 they could implement fork and semaphores one day! cheers!
262
2633.4 Sat Jan 2 15:13:04 CET 2010
264 - (libeio) max_poll_time was not properly converted to ticks.
265 - clarify cancel_subs description.
266 - IO::AIO::sendfile did not actually return the return value
267 from the sendfile call.
268 - implement aio_msync, aio_mtouch.
269 - (libeio) tentatively support darwin in sendfile.
270
2713.31 Thu Nov 12 02:14:29 CET 2009
272 - fix result status documentation of aio_copy, aio_move.
273 - speed up object creation considerably by avoiding
274 hash lookups.
275
2763.3 Wed Aug 5 13:52:58 CEST 2009
277 - use common::sense.
278 - use common schmorp.h header.
279 - allow integers (file descriptors) in addition to file handles.
280 - take advantage of linux' eventfd (but it seems slower on smp?).
281 - use poll not select on posix platforms.
282
2833.261 Wed Jul 1 10:11:51 CEST 2009
284 - more 0S X workarounds (patch by Tokuhiro Matsuno).
285
2863.26 Tue Jun 30 09:33:26 CEST 2009
287 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
288 try to work around this horribly broken OS in a somewhat hackish
289 way. might help other os's too.
290
2913.25 Sat Jun 27 05:18:26 CEST 2009
292 - added IO::AIO::fadvise and IO::AIO::sendfile.
293 - (libeio) replaced quicksort+insertion sort by a tuned radix
294 sort + insertion sort, resulting in comparable runtime (usually
295 faster) to the old version, but without any ill side effects on
296 degenerated (for quicksort) data.
297 - (libeio) correctly sort dirs by inodes if we have perfect type
298 knowledge and DIRS_FIRST is used.
299 - (libeio) internally the wrong DT_* constants were used, but no
300 known system has differing EIO_DT_*/DT_* values, so not an issue.
301 - removed a (harmless) assert that was left over on the code
302 but should not have been.
303 - use more correct types (change IO length from IV to VAL64,
304 which makes a difference on systems without 64 bit perls).
305
3063.23 Sat Jun 13 16:57:58 CEST 2009
307 - fix off-by-one bug in aio_readdir that was introduced in the
308 rushed 3.22 release.
309
3103.22 Sat Jun 13 15:32:40 CEST 2009
311 - speed up readdirx sort algorithm slightly.
312 - bin/treescan was missing from distro tarball.
313
3143.21 Fri Jun 12 18:45:53 CEST 2009
315 - new options --dirs and --files for treescan.
316 - install bin/treescan by default.
317 - (libeio) aio_readdir can now be cancelled while executing.
318 - fix a printf format string for 64 bit systems (could lead
319 to problems on big endian 64 bit systems).
320 - do not use qsort() but our own algorithm: glibc initialises
321 the whole locale and I/O subsystem inside qsort, causing
322 a stack overflow on 32 bit machines. The new sort uses much less
323 stack and is more than twice as fast in typical situations.
324
3253.2 Sun Jun 7 20:30:05 CEST 2009
326 - (libeio) pwrite emulation was even more flawed than intended and did
327 not restore the file offset.
328 - add aio_readdirx, which can return inode and filetype and sort
329 the names in various ways.
330 - unfortunately, utime, chmod, chown on an open file that has just
331 been written can easily block, which caused aio_copy to block the
332 process. no more!
333 - no longer rely on dst path in aio_copy when futime is available.
334
3353.19 Tue Apr 21 22:05:21 CEST 2009
336 - more perl 5.10 workarounds for aio_read and write.
337 - aio_write no longer modifies the sv (if possible).
338 - aio_read now works correctly with magic values.
339
3403.18 Sun Apr 19 21:17:32 CEST 2009
341 - better diagnostics when some aio_* functions get passed an illegal fh.
342 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
343
3443.17 Thu Nov 20 08:45:36 CET 2008
345 - (libeio) added aio_sync_file_range (untested).
346 - add aio_busy to @IO::AIO::AIO_REQ.
347
3483.16 Wed Oct 22 18:28:01 CEST 2008
349 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
350 part to improve portability to perl 5.8 (reported by szymon).
351
3523.15 Mon Oct 13 00:39:55 CEST 2008
353 - automatic removal of feeders was broken.
354 - (libeio) use a more robust method to detect whether a feeder
355 has added something to the group or not.
356
3573.1 Thu Oct 2 13:34:40 CEST 2008
358 - pre-deref the passed callback object, for increased speed
359 and decreased memory usage.
360 - call on_next_submit callback even for aio_group - impact unknown,
361 but seems more correct.
362 - $req->cb now returns the original callback.
363 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
364 requiring a thread switch.
365 - (libeio) status code of aio_futime and aio_utime was always passed 0.
366 - do some other ยต-optimisations.
367
3683.07 Sat Aug 2 16:06:13 CEST 2008
369 - do not include LIBS in autoconf tests.
370
3713.06 Tue Jul 15 12:41:32 CEST 2008
372 - move preadwritelock definition before it's first reference,
373 to make it compile again on broken platforms (they still exist)
374 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
375
3763.05 Thu Jun 19 23:23:52 CEST 2008
377 - work around perl overriding readdir etc. with thread-unsafe
378 (sic!) versions.
379
3803.04 Wed Jun 18 01:35:38 CEST 2008
381 - (libeio) fix eio_mknod, which confused it's arguments.
382 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
383 is stupid.
384 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
385 - (libeio) fix a bug that could potentially cause IO::AIO
386 not to get initialised properly.
387
3883.03 Thu May 29 05:33:30 CEST 2008
389 - (libeio) correctly call pthread_attr_destroy ().
390 - (libeio) work around broken bsd headers once more.
391 - reduce shared library size again by not including wrappers.
392 - max_outstanding could cause poll to enter a busy-waiting loop.
393 - document the new IO::AIO::poll_cb result value.
394
3953.02 Mon May 12 02:32:02 CEST 2008
396 - fix a memory leak on aio_readlink.
397 - bring back working fchmod.
398 - nop and busy now set result to 0.
399 - set errno to ENOMEM when allocation fails.
400
4013.01 Sun May 11 03:07:03 CEST 2008
402 - (libeio) make it compile on systems without readahead or readdir_r.
403 - (libeio) improve configure check for readahead availability.
404 - do not try to link against -lrt.
405 - use a separate configure script for IO::AIO (not the libeio one).
406
4073.0 Sun May 11 00:57:14 CEST 2008
408 - added bin/treescan to the distribution.
409 - switched to using libeio.
410 - LOTS OF INCOMPATIBLE CHANGES:
411 - remove signal functionality, it is not worth the effort.
412 - max_outstanding no longer returns the previous number of requests.
413 - poll_cb no longer returns number of requests.
414
4152.62 Sat Apr 26 13:59:33 CEST 2008
416 - port to solaris perls configured for old posix
417 (analysed by Jost Krieger).
418 - keep a reference to the perl filehandle object in aio_close,
419 so it doesn't get closed prematurely, leading to ugly races.
420
4212.61 Wed Apr 16 18:45:02 CEST 2008
422 - fix treescan output duplication and improve output ordering.
423 also display files given on the commandline.
424 - use a different algorithm for aio_close that is faster
425 and probably has even lower chances of blocking.
426 - do our own stack memory management for threads - linux
427 allocates outrageous amounts of VM (not so bad unless you
428 use mlockall...), which severely limits the number of threads
429 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
430 and 4096 * sizeof (long) (usually this is 16..64k).
431
4322.6 Sun Mar 30 08:28:11 CEST 2008
10 - added aio_sync. 433 - added aio_sync.
434 - added aio_pathsync.
435 - fix prototypes of (void) functions.
11 436
122.51 Sat Oct 6 16:04:54 CEST 2007 4372.51 Sat Oct 6 16:04:54 CEST 2007
13 - perlio isn't generally threadsafe, so aio_close could not work reliably. 438 - perlio isn't generally threadsafe, so aio_close could not work reliably.
14 aio_close now tries a safe hack that might not be that asynchronous 439 aio_close now tries a safe hack that might not be that asynchronous
15 (see the manpage for details). 440 (see the manpage for details).

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